Meta: add debug info (see #2260)

This is pushed directly to the default branch, because workflow_run scripts are ran from the default branch

Author: ljharb

.github/workflows/preview.yml

@@ -44,6 +44,11 @@ jobs:
             const fs = require('fs');
             fs.writeFileSync('${{ github.workspace }}/out.zip', Buffer.from(download.data));
       - run: unzip -o out.zip -d out
+      - name: 'debug info'
+        uses: actions/[email protected]
+        with:
+          script: |
+            console.log(${{ toJson(github.event) }});
       - run: node scripts/publish-preview
         env:
           CI_PREVIEW_TOKEN: ${{ secrets.CI_PREVIEW_TOKEN }}